7側(cè)隙
7.1本標(biāo)準(zhǔn)對齒輪傳動側(cè)隙只規(guī)定其最小法向側(cè)隙jnmin.
7.2側(cè)隙種類分為5種,按jnmin值從小到大的順序,用字母h、g、f、e、d表示,h為零,如圖1所示。具體數(shù)值見表4。
圖1
7.3評定齒輪傳動側(cè)隙的指標(biāo)是 和TS。具體數(shù)值分別見表5、表6。
8圖樣標(biāo)注
8.1在齒輪工作圖上,應(yīng)標(biāo)注齒輪的精度等級和側(cè)隙種類。
8.2標(biāo)注示例
8.2.1齒輪的三個公差組精度指標(biāo),采用相同的精度等級時,標(biāo)注為:
例:齒輪的Ⅰ、Ⅱ、Ⅲ公差組精度等級同為7級,側(cè)隙種類為g,標(biāo)注為:
7g GB 10225-88
8.2.2齒輪的三個公差組精度指標(biāo),采用不同的精度等級時,標(biāo)注為:
例:齒輪的Ⅰ公差組精度等級為7級,Ⅱ公差組精度等級為7級,Ⅲ公差組精度等級為6級,側(cè)隙種類為f,標(biāo)注為:
7-7-6f GB 10225-88
表2公差或極限偏差Fi′,F(xiàn)P,F(xiàn)PK,F(xiàn)r,F(xiàn)iΣc″,F(xiàn)vj,fi′,fPt,ff,fiΣc″
精度
等級 |
代號 |
中點模數(shù)
(mm)mm |
中點分度圓直徑(dm)mm |
≤12 |
>12~20 |
>20~32 |
>32~50 |
>50~80 |
>80~125 |
>125~200 |
4 |
Fi′ |
0.1~0.5 |
11 |
12 |
13 |
14 |
15 |
17 |
19 |
>0.5~<1 |
12 |
13 |
14 |
15 |
16 |
18 |
20 |
FP |
0.1~<1 |
6 |
7 |
8 |
9 |
10 |
12 |
14 |
FPK |
0.1~<1 |
4 |
4 |
5 |
5 |
6 |
7 |
8 |
fi′ |
0.1~0.5 |
8 |
>0.5~<1 |
10 |
fPt |
0.1~0.5 |
3 |
>0.5~<1 |
4 |
ff |
0.1~0.5 |
5 |
>0.5~<1 |
6 |
5 |
Fi′ |
0.1~0.5 |
17 |
18 |
19 |
20 |
22 |
26 |
29 |
>0.5~<1 |
18 |
19 |
20 |
21 |
23 |
27 |
30 |
FP |
0.1~<1 |
10 |
11 |
12 |
14 |
16 |
19 |
22 |
FPK |
0.1~<1 |
6 |
6 |
7 |
8 |
9 |
11 |
13 |
Fr |
0.1~<1 |
8 |
9 |
10 |
11 |
13 |
15 |
18 |
FiΣc″ |
0.1~<1 |
16 |
18 |
20 |
22 |
25 |
29 |
35 |
fi′ |
0.1~0.5 |
12 |
>0.5~<1 |
14 |
fPt |
0.1~0.5 |
5 |
>0.5~<1 |
6 |
ff |
0.1~0.5 |
7 |
>0.5~<1 |
8 |
fiΣc″ |
0.1~0.5 |
9 |
>0.5~<1 |
11 |
6 |
Fi′ |
0.1~0.5 |
26 |
28 |
30 |
33 |
36 |
40 |
45 |
>0.5~<1 |
27 |
29 |
31 |
34 |
37 |
41 |
46 |
FP |
0.1~<1 |
16 |
18 |
20 |
23 |
26 |
30 |
36 |
FPK |
0.1~<1 |
9 |
10 |
11 |
13 |
15 |
17 |
20 |
Fr |
0.1~<1 |
13 |
14 |
16 |
18 |
21 |
24 |
28 |
FiΣc″ |
0.1~<1 |
25 |
27 |
31 |
35 |
41 |
47 |
55 |
fi′ |
0.1~0.5 |
18 |
>0.5~<1 |
20 |
fPt |
0.1~0.5 |
8 |
>0.5~<1 |
9 |
ff |
0.1~0.5 |
10 |
>0.5~<1 |
11 |
fiΣc″ |
0.1~0.5 |
14 |
>0.5~<1 |
18 |
7 |
Fi′ |
0.1~0.5 |
36 |
38 |
41 |
45 |
49 |
55 |
62 |
>0.5~<1 |
38 |
40 |
43 |
47 |
51 |
57 |
64 |
FP |
0.1~<1 |
23 |
25 |
28 |
32 |
36 |
42 |
50 |
Fr |
0.1~<1 |
18 |
21 |
23 |
26 |
30 |
34 |
40 |
FiΣc″ |
0.1~<1 |
35 |
40 |
45 |
51 |
59 |
67 |
78 |
Fvj |
0.1~<1 |
25 |
29 |
31 |
35 |
40 |
46 |
54 |
fi′ |
0.1~0.5 |
24 |
>0.5~<1 |
28 |
fPt |
0.1~0.5 |
11 |
>0.5~<1 |
13 |
ff |
0.1~0.5 |
13 |
>0.5~<1 |
15 |
fiΣc″ |
0.1~0.5 |
19 |
>0.5~<1 |
25 |
8 |
Fi′ |
0.1~0.5 |
49 |
52 |
56 |
61 |
67 |
75 |
85 |
>0.5~<1 |
52 |
55 |
59 |
64 |
70 |
78 |
88 |
FP |
0.1~<1 |
32 |
35 |
39 |
44 |
50 |
58 |
68 |
Fr |
0.1~<1 |
24 |
26 |
29 |
33 |
38 |
43 |
50 |
FiΣc″ |
0.1~<1 |
47 |
51 |
57 |
65 |
75 |
85 |
100 |
Fvj |
0.1~<1 |
33 |
36 |
39 |
44 |
50 |
58 |
68 |
fi′ |
0.1~0.5 |
34 |
>0.5~<1 |
39 |
fPt |
0.1~0.5 |
16 |
>0.5~<1 |
18 |
fiΣc″ |
0.1~0.5 |
27 |
>0.5~<1 |
35 |
9 |
Fr |
0.1~<1 |
30 |
33 |
37 |
42 |
48 |
55 |
63 |
FiΣc″ |
0.1~<1 |
59 |
65 |
73 |
82 |
95 |
110 |
125 |
Fvj |
0.1~<1 |
41 |
45 |
50 |
57 |
65 |
75 |
85 |
fPt |
0.1~0.5 |
20 |
>0.5~<1 |
23 |
fiΣc″ |
0.1~0.5 |
34 |
>0.5~<1 |
44 |
10 |
FiΣc″ |
0.1~<1 |
74 |
82 |
92 |
105 |
120 |
135 |
155 |
Fvj |
0.1~<1 |
52 |
57 |
64 |
72 |
82 |
92 |
105 |
fPt |
0.1~0.5 |
25 |
>0.5~<1 |
29 |
fiΣc″ |
0.1~0.5 |
43 |
>0.5~<1 |
55 |
11 |
Fr |
0.1~<1 |
48 |
53 |
59 |
66 |
75 |
85 |
100 |
FiΣc″ |
0.1~<1 |
95 |
105 |
115 |
130 |
145 |
165 |
190 |
Fvj |
0.1~<1 |
65 |
72 |
80 |
90 |
100 |
115 |
135 |
fPt |
0.1~0.5 |
31 |
>0.5~<1 |
36 |
fiΣc″ |
0.1~0.5 |
54 |
>0.5~<1 |
69 |
12 |
Fr |
0.1~<1 |
60 |
66 |
74 |
83 |
92 |
105 |
125 |
FiΣc″ |
0.1~<1 |
120 |
130 |
145 |
165 |
185 |
210 |
240 |
Fvj |
0.1~<1 |
82 |
90 |
100 |
115 |
130 |
145 |
165 |
fPt |
0.1~0.5 |
39 |
>0.5~<1 |
45 |
fiΣc″ |
0.1~0.5 |
68 |
>0.5~<1 |
86 |
|
|
|
|
|
|
|
|
|
|
|
注:①表中FPK數(shù)值系數(shù)按k=Z/8給出。如k≠Z/8時,應(yīng)按附錄B中的FPK關(guān)系式進(jìn)行計算。
②表中fiΣc″與Fvj應(yīng)按大、小齒輪中點分度圓直徑之各的一半選取。
表3齒向公差Fβ μm
表4最小法向側(cè)隙jnmin μm
中點錐距(Rm)
mm |
小輪分錐角
(δ1)(°) |
側(cè)隙種類 |
h |
g |
f |
e |
d |
≤12 |
≤15 |
0 |
4 |
6 |
10 |
14 |
>15~25 |
0 |
5 |
8 |
12 |
18 |
>25 |
0 |
6 |
9 |
15 |
22 |
>12~20 |
≤15 |
0 |
5 |
8 |
12 |
18 |
>15~25 |
0 |
6 |
9 |
15 |
22 |
>25 |
0 |
8 |
11 |
18 |
27 |
>20~32 |
≤15 |
0 |
6 |
9 |
15 |
22 |
>15~25 |
0 |
8 |
11 |
18 |
27 |
>25 |
0 |
9 |
13 |
21 |
33 |
>32~50 |
≤15 |
0 |
8 |
11 |
18 |
27 |
>15~25 |
0 |
9 |
13 |
21 |
33 |
>25 |
0 |
11 |
16 |
25 |
39 |
>50~80 |
≤15 |
0 |
9 |
13 |
21 |
33 |
>15~25 |
0 |
11 |
16 |
25 |
39 |
>25 |
0 |
13 |
19 |
30 |
46 |
>80~125 |
≤15 |
0 |
11 |
16 |
25 |
39 |
>15~25 |
0 |
13 |
19 |
30 |
46 |
>25 |
0 |
15 |
22 |
35 |
54 |
注:正交齒輪副按中點錐距Rm查表。非正交齒輪副按下式算出的Rm′查表:
式中:δ2、δ1——大、小輪分錐角。
表5中點分度圓齒厚上偏差
μm
側(cè)隙
種類 |
Ⅱ公差組
精度等級 |
中點分度圓直徑(dm)mm |
≤12 |
>12~20 |
>20~32 |
>32~50 |
>50~80 |
>80~125 |
>125~200 |
h |
4~6 |
8 |
8 |
9 |
9 |
10 |
11 |
14 |
7 |
12 |
12 |
13 |
14 |
15 |
16 |
20 |
g |
4~6 |
12 |
13 |
14 |
15 |
17 |
20 |
26 |
7 |
16 |
17 |
18 |
20 |
22 |
25 |
30 |
8 |
20 |
22 |
24 |
26 |
28 |
30 |
38 |
f |
4~6 |
17 |
18 |
21 |
24 |
28 |
32 |
42 |
7 |
20 |
22 |
25 |
28 |
32 |
36 |
44 |
8 |
26 |
28 |
30 |
34 |
38 |
42 |
52 |
9 |
36 |
38 |
42 |
45 |
48 |
52 |
62 |
10 |
52 |
54 |
56 |
58 |
60 |
65 |
80 |
e |
4~6 |
28 |
30 |
34 |
40 |
46 |
54 |
65 |
7 |
32 |
34 |
38 |
44 |
50 |
60 |
70 |
8 |
34 |
38 |
42 |
46 |
52 |
62 |
75 |
9 |
45 |
48 |
52 |
56 |
62 |
70 |
80 |
10 |
60 |
62 |
65 |
68 |
75 |
80 |
95 |
11 |
65 |
68 |
70 |
75 |
80 |
85 |
105 |
12 |
70 |
72 |
75 |
80 |
85 |
90 |
115 |
d |
4~6 |
35 |
38 |
40 |
45 |
50 |
55 |
70 |
7 |
42 |
45 |
48 |
52 |
55 |
60 |
80 |
8 |
45 |
48 |
50 |
55 |
60 |
65 |
85 |
9 |
55 |
60 |
65 |
70 |
75 |
80 |
90 |
10 |
65 |
68 |
70 |
75 |
80 |
85 |
100 |
11 |
70 |
75 |
80 |
85 |
90 |
95 |
110 |
12 |
75 |
80 |
85 |
90 |
95 |
100 |
120 |